In 1915 he published the general relativity, with the Einstein field equation, which provided to many discoveriesEinstein's theoriesHe developed two theories that compose what is commonly known as relativitySpecial theory of relativityIt was published in 1905 and it consist of two main postulates:

1. the Principle of Realtivity: each law of physics is the same in each inertial frame of reference

2. the Principle of Costancy of Lightspeed: the speed of light in the empty space is definied as c (299,792,458 m/s)

These two principles led to the equivalence between mass and energy, or rather the formula E = mc²

General relativityIn 1915 it was created to combine his previous theory with the Newton’s law of universal gravitation. The equation is much more complicated and it include acceleration, to obtain a complete theory of gravitation.Applicazioni in ambito letterarioLa coscienza di ZenoAutore: Italo Svevo